The VOLTTRON Central Agent (VCM) is responsible for controlling multiple
VOLTTRON instances through a single interfaces. The VOLTTRON instances
can be either local or remote. VCM leverages an internal VOLTTRON web server
providing a interface to our JSON-RPC based web api. Both the web api and
the interface are served through the VCM agent. There is a VOLTTRON Central Demo that will allow you to quickly setup and see the current offerings of the interface.
VOLTTRON Central will allow you to

In order for any web agent to be enabled, there must be a port configured to
serve the content. The easiest way to do this is to create a config file in
the root of your VOLTTRON_HOME directory. ( to do this automatically see VOLTTRON Config )

{# The agentid is used during display on the VOLTTRON central platform# it does not need to be unique."agentid":"volttron central",# Authentication for users is handled through a naive password algorithm# Note in the following example the user and password are both admin.# DO NOT USE IN PRODUCTION ENVIRONMENT!# import hashlib# hashlib.sha512(password).hexdigest() where password is the plain text password."users":{"reader":{"password":"2d7349c51a3914cd6f5dc28e23c417ace074400d7c3e176bcf5da72fdbeb6ce7ed767ca00c6c1fb754b8df5114fc0b903960e7f3befe3a338d4a640c05dfaf2d","groups":["reader"]},"writer":{"password":"f7c31a682a838bbe0957cfa0bb060daff83c488fa5646eb541d334f241418af3611ff621b5a1b0d327f1ee80da25e04099376d3bc533a72d2280964b4fab2a32","groups":["writer"]},"admin":{"password":"c7ad44cbad762a5da0a452f9e854fdc1e0e7a52a38015f23f3eab1d80b931dd472634dfac71cd34ebc35d16ab7fb8a90c81f975113d6c7538dc69dd8de9077ec","groups":["admin"]},"dorothy":{"password":"cf1b67402d648f51ef6ff8805736d588ca07cbf018a5fba404d28532d839a1c046bfcd31558dff658678b3112502f4da9494f7a655c3bdc0e4b0db3a5577b298","groups":["reader, writer"]}}}

To start VOLTTRON Central first make sure the
VOLTTRON instance is running
Next create/choose the config file to use. Finally from an activated
shell in the root of the VOLTTRON repository execute

# Arguments are package to execute, config file to use, tag to use as reference./scripts/core/pack_install.shservices/core/VolttronCentralservices/core/VolttronCentral/configvc# Start the agentvctlstart--tagvc